Immanuel loeenzen



(No Model.)

I. LORENZEN.

DEVICE FOR STRBTGHING BED BOTTOM S. No. 272,721. Patented Feb. 20,1883.

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0 f, through which the bolt also passes.

UNITE STATES PATENT OFFIQE.

IMMANUEL LORENZEN, OF HARTFORD, CONNECTICUT, ASSIGNOB. TO THE PEERLESSWIRE MATTRESS COMPANY, OF SAME PLACE.

DEVICE FOR STRETCHING BED=BOTTOMS.'

SPECIFICATION forming part of Letters Patent No. 272,721, dated February20, 1853,

Application filed November 1, 1882. (No model.)

To all whom it may concern Be it known that I, IMMANUEL LORENZEN,ofHartford, in the countv of Hartford and State of Connecticut, haveinvented certain new and useful Improvements in Devices for StretchingBed Bottoms, of which the following is a description, reference beinghad to the accompanying drawings, where- Figure l is a top view of aportion of the side and end rails of a bedstead-frame secured bymyimproved iron. Fig. 2 is aview of same in vertical section on planedenoted by line 00 a: of Fig. 1.

My invention relates to the class of cornerirons used on bedstead ormattress frames adapted for a mattress of woven wire or similar fabric;and it consists in the peculiar device for supporting and adjusting theend rails of thet'rame at the corners, as hereinafter more fullydescribed.

In the arcom panying drawings, the letter a denotes a plate of castmetal, preferably iron, having the lateral flanges 1), against which theend of the side rail, 0, abuts, and the flange d. which has a flat base,(2, resting upon the upper side of the side rail. These flanges areperforated in a line parallel to the side rail for the passage of thebolt e, which bears the not 9, usually socketed in the side of the endrail Upon the inner side of the plate there is an inwardly-projectingweb, 71, arranged parallel to the upper face of the side rail, andforming a seat or rest upon which the end of the end rail slides. Theparts are assembled as shown, and the fabric, which is secured in theusual manner to the edgecof theend rail, is stretched or loosened byturning the bolt 0, as by means of a wrench applied to its head. Alldownward pressure upon the end rail is borne by the bolt resting in thehearings in the flanges and the web h below the end of the rail, and theweb and bolt thus placed keep the end rails in a plane parallel to theside rails.

In some frames the end rails are fitted to sockets in the corner-irons;but this is afa-ulty method, as the shrinking of the wood allows therails to become loose and to turn in the socket under the tension of thefabric, slackening it. In my device the rail is securely held by thebolt against rotation, and this serves to preserve a uniform tensionafter the bed is setup, and this tension may at anytime be increased bythe means and method above described. i

I claim as my invention- 1. A corner-iron having the lateral flangesperforated as a bearing for a bolt supporting an end rail, allsubstantially as described.

2. In combinatiomin a mattress-frame, acorner-iron, a, having perforatedflanges b (1, bolt e, out 9, end rails,f, and side rails, c, allsubstantially as described.

3. In combination, in a mattress-frame, a corner-iron, (1., havingperforated flanges b (1, web h, bolt 6, nut g, end rails,f, and siderails, c, all substantially as described.

IMMANUEL LORENZEN.

\Vitnesses C. L. BURDETT, W. H. MARSH.

